Spero Therapeutics Inc. (SPRO)
NASDAQ: SPRO
· Real-Time Price · USD
2.05
0.02 (0.99%)
At close: Oct 03, 2025, 3:59 PM
2.05
0.00%
After-hours: Oct 03, 2025, 04:10 PM EDT
13F Institute Ownership
Total Institutes of 43 in Spero Therapeutics expanded their positions with an increase of 2 investors compared to the previous quarter. A reduction of 4.14M shares, as total invested capital grew by $20.92M with ownership percentage dropping from 27.28% to 19.57%.
Top Shareholders
| Institute | Ownership | Shares | Shares % Change | Market Value | Portfolio | Filing Date |
|---|---|---|---|---|---|---|
| Pfizer Inc | 4.22% | 2.36M | +0.00% | 6.85M | 1.19% | Aug 11, 2025 |
| Vanguard Group Inc | 3.48% | 1.95M | +10.59% | 5.66M | < 0.01% | Aug 11, 2025 |
| Anson Funds Management LP | 2.88% | 1.62M | -57.48% | 4.68M | 0.67% | Aug 14, 2025 |
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